Beaker is a library for caching and sessions for use with web applications and
stand-alone Python scripts and applications. It comes with WSGI middleware for
easy drop-in use with WSGI based web applications, and caching decorators for
ease of use with any Python based application.

Lazy-Loading Sessions: No performance hit for having sessions active in a request unless they’re actually used

Performance: Utilizes a multiple-reader / single-writer locking system to prevent the Dog Pile effect when caching.